云存储中动态多副本数据的完整性验证

Integrity Verification of Dynamic Multiple-Replica Data in Cloud Storage

云存储环境下,如何高效且动态地完成对用户多副本数据的完整性验证是一个极具挑战性的课题.在现有云数据完整性验证方案的基础上提出了一种多副本数据持有性证明方案,通过引入认证的副本哈希数组数据结构实现了多副本文件的可动态更新验证.方案实现了数据的安全存储与更新,并有效保证了数据多副本的隐私安全.安全性分析与实验表明了方案的安全性与有效性.

In a cloud storage environment,how to efficiently and dynamically complete the integrity verification of multi-user multi-copy data is a big challenge. Considering the application scenario of multi-copy,this paper proposes a multi-copy data ownership proof scheme based on the existing cloud data integrity verification scheme. Through the introduction of the authentication data structure-copy hash array,multi-replicas files can be dynamically updated and verified. The security analysis experiment proves the safety and the validity of the scheme which realizes the secure storage and the update of the data and also ensures the privacy of multi-copies of the data.